Welcome to LG KM555 Forum!
I've been wondering if I can flash my KM555 with other firmwares like LG Pop firmwares? I saw a video on youtube.com : http://www.youtube.com/watch?v=cWPqBcLnD6AIt had the Cartoon theme, I think by extracting it's idle widget and topmenu from CUST, we could apply this them.
To bad for Km555 users, stuck with the default lg theme.